/**
* Copyright (c) 2005-2011 by Appcelerator, Inc. All Rights Reserved.
* Licensed under the terms of the Eclipse Public License (EPL).
* Please see the license.txt included with this distribution for details.
* Any modifications to this file must keep this entire header intact.
*/
package com.python.pydev.refactoring.refactorer.search.copied;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.search.ui.text.AbstractTextSearchResult;
import com.python.pydev.refactoring.refactorer.search.PythonFileSearchResult;
public class FileTableContentProvider implements IStructuredContentProvider, IFileSearchContentProvider {
private final Object[] EMPTY_ARR = new Object[0];
private FileSearchPage fPage;
private AbstractTextSearchResult fResult;
public FileTableContentProvider(FileSearchPage page) {
fPage = page;
}
public void dispose() {
// nothing to do
}
public Object[] getElements(Object inputElement) {
if (inputElement instanceof PythonFileSearchResult) {
int elementLimit = getElementLimit();
Object[] elements = ((PythonFileSearchResult) inputElement).getElements();
if (elementLimit != -1 && elements.length > elementLimit) {
Object[] shownElements = new Object[elementLimit];
System.arraycopy(elements, 0, shownElements, 0, elementLimit);
return shownElements;
}
return elements;
}
return EMPTY_ARR;
}
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
if (newInput instanceof PythonFileSearchResult) {
fResult = (PythonFileSearchResult) newInput;
}
}
public void elementsChanged(Object[] updatedElements) {
TableViewer viewer = getViewer();
int elementLimit = getElementLimit();
boolean tableLimited = elementLimit != -1;
for (int i = 0; i < updatedElements.length; i++) {
if (fResult.getMatchCount(updatedElements[i]) > 0) {
if (viewer.testFindItem(updatedElements[i]) != null)
viewer.update(updatedElements[i], null);
else {
if (!tableLimited || viewer.getTable().getItemCount() < elementLimit)
viewer.add(updatedElements[i]);
}
} else
viewer.remove(updatedElements[i]);
}
}
private int getElementLimit() {
try {
return fPage.getElementLimit().intValue();
} catch (Throwable e) {
//ignore (not available in eclipse 3.2)
return 0;
}
}
private TableViewer getViewer() {
return (TableViewer) fPage.getViewer();
}
public void clear() {
getViewer().refresh();
}
}